#511CBB#511CBB

#511CBB is a dark, highly saturated violet. Relative luminance 0.062; OKLCH L 42.2% C 0.220 H 287.7°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#511CBB
RGB	rgb(81, 28, 187)
HSL	hsl(260, 74%, 42%)
HSV	hsv(260, 85%, 73%)
CMYK	cmyk(56.7%, 85%, 0%, 26.7%)
CIE-LAB	lab(29.83, 58.58, -72.69)
CIE-LCH	lch(29.83, 93.36, 308.87°)
OKLab	oklab(42.22% 0.0668 -0.2093)
OKLCH	oklch(42.22% 0.22 287.7)
XYZ	xyz(12.7756, 6.1670, 47.5212)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511CBB #86BB1C

analogous

#1C37BB #511CBB #A11CBB

triadic

#511CBB #BB511C #1CBB51

tetradic

#511CBB #BB1C37 #86BB1C #1CBBA1

square

#511CBB #BB1C37 #86BB1C #1CBBA1

split-complementary

#511CBB #BBA11C #37BB1C

monochromatic

#230C51 #3A1486 #511CBB #6D34E1 #9369E9

Accessibility & contrast

On white

9.40

#511CBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#511CBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511CBB

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511CBB	#FFFFFF	#000000	##FFFFFF
##511CBB	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ABF

Deuteranopia (green-blind)

#0042B8

Tritanopia (blue-blind)

#1F4F6F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #511cbb;
/* rgb */ color: rgb(81, 28, 187);
/* oklch */ color: oklch(42.2% 0.220 287.7);

Tailwind

colors: {
  custom: {
    50: '#8f62d1',
    500: '#511cbb',
    950: '#000000',
  },
}

SCSS

$custom: #511cbb;
$custom-light: #8f62d1;
$custom-dark: #000000;

JSON

{
  "hex": "#511cbb",
  "rgb": {
    "r": 81,
    "g": 28,
    "b": 187
  },
  "hsl": {
    "h": 260,
    "s": 73.953,
    "l": 42.157
  },
  "oklch": {
    "l": 0.42224,
    "c": 0.21966,
    "h": 287.7
  },
  "luminance": 0.06168
}

Semantic roles & 50–950 ramp

primary

#511CBB

secondary

#ABCE65

accent

#F137B3

background

#F9F6FD

surface

#F2EBFA

border

#CCC6D3

text

#0E0614

muted

#7E7A83

Preview Lab

Preview with #511CBB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →